Pliers



R. F. METZGER. PUERS.

APPLICATIONv Flyin MAY 1o, 1921.

1,389,371. Patented Aug. 30, 19212.

UNITED S TA mi'rlzN'l`A OFFICE.

REINHARDU; r. Marmara, or BROOKLYN, New YORK.V

rninits.

applicati@ ined May 1o,

for facilitating the application of small rivet'sto parts to be connected, the same being particularly'usefulV in securing the shells to the guards of eye-glass nose-pieces. Such parts are very small and difficult to handle. The rivets likewise are exceedingly small and correspondingly difficult to handle. By my construction, a nose guard shell may be applied in a remarkablyshort space of time, saving tremendously in the labor charge ordinarily involved. Furthermore, y the tool guarantees an effective and durable fastening. The device may be appropriately termed a riveting tool, although it performs in actual practice the function of a punch, cutter, and setting means for the rivet.

In the accompanying drawings,

Figure l isa side elevation of the tool partly in section.

Fig. 2 is a plan view of the upper jaw.

Fig. 3 is a. plan view of the lower aw.

F ig. 4 is a sectional view relatively enlarged, and illustrating the jaws and the associated parts as they would appear immediately following the punching operation. f

Fig. 5 represents the parts as they would appear when the rivet is pushed to its home position. w f

F ig. 6 illustrates the parts as they would appear when the superfluous end of the rivet is clipped off. n

F ig. 7 illustrates the parts as they would appear when the rivet is being upset.

Fig. 8 illustrates the parts as they would appear when an Vjold rivet is being pushed out.

l represents the upper jaw of the riveting tool. 2 represents the lower jaw. These jaws may be provided with any means for causing the same to move to and fro, but by preference, they are associated respectively with two handles l `Qa'which are pivoted at 3 after the manner of a pair of pliers, so that the jaws may be moved toward and away from each other. To the lowerjaw near its tip, there is a socket 4f, in which a 1921. serial N o. 468,217.

rivet may be seated as indicated in Fig. 4f. Directly opposite the socket and in the upn per jaw is a hole 6. 7 isY another hole preferably in the upper jaw which faces a solid partof the j aw' 2. 8 is still another hole also preferably in the upper jaw which faces a punch 9 carried by the lower jaw. 10-10 are cutting edges on thev jaws l-2 which. `function in the manner hereinafter 'de- 1l represents conventionally thek scribed. guard of a'nose-piece, while 12 convention` ally represents athin piece Vof shell or celluloid which is to be attached to theguard 1l. The guard 11 is usually made'of gold or gold-plate, the rivet holes being formedv therein'at the time of manufacture. The shell pieces are ordinarily not bored or punched Vat the outset, but in practice, are

Specification of Letters Patent. .Patented Aug, 30, 1921,

bored when they are applied to the guards.

W hen using my tool for the piupose of conneeting these parts,`the jaws l-Q are opened up, a rivet 5 is ,placed in the socket 4, the guard 1l and shell 12 are placed together in the proper position, andthe hole in the guard is slipped over theexposed end of the rivet 5. The jaws are then forced together causing the end of the rivet 5 to act as a punch so that it will force its way through the shell 12 as lshown in Fig. 4. When this is done, the jaws are again opened up, the end of the rivet is passed through the hole 7, andthe jaws are brought together forcing the rivet into its home position shown in Fig. 5. The jaws are again opened up, the guard, shell and rivet are removed, and the surplus end of the rivet may be clipped off as shown in Fig. 6. The parts are then placed in the position shown in Fig. 7 so that the jaws when brought together will .upset the end of the rivet, tightly bending together the guard and shell as shown in said figure. It will b e understood, that the appearance of the rivets and the various parts are enlarged or exaggerated in thel wherein the punch 9 isshown as pushing these very small and out an old rivet 5a. By this very simple and handy tool, I am enabled to secure together delicate pieces in a remarkably short space of time, by which l mean, the entire work can be accomplished well inside of a minute, whereas by methods heretofore employed it has usually taken twenty minutes to perform the same work. 0f course, the actual time depends somewhat upon the skill of the particular operative. By the use of my tool,` a comparatively u nskilled operative can successfully perform this. work, whereas heretofore such work has required a skilled operator.

lt will be noted that the jaws are flat faced,land it is preferable that botlrof the same should be comparatively thin. Hence, provide at each side of each aw a flanged reinforcement la, which flanges greatly stilfen said jaws so that the same will exert the necessary pressure to'be applied.

What I claim is j l. A riveting tool comprising, a pair of jaws with means for moving the same toward and away fromV each other, a socket carried by one of said jaws, the other jaw having an opening therein facing said socket, one of said jaws having an opening facing a solid part of the opposite jaw, a punch on one of said jaws, and an opening on the other facing said punch.

2. A riveting tool comprising, a pair of jaws with means for moving the same toward and away from each other, a socket carried by one of said jaws, the other jaw having an opening therein facing said socket, one of said jaws having an opening facing a solid part of the opposite jaw, a punch on one of said jaws, and an opening on the other facing said punch, and co'-act ing cuttin edges at one side of said jaws. EINHARDT F. METZGER. 

